British rower Steve Redgrave is a worrier. he claims fretting is essential to winning races. "If you're not worrying, you lose your mental edge," says Redgrave. "Before you know it, somebody comes from out of the woodwork to pull a half a length ahead of you." Apparently the worrying has paid off for him. Nobody has got ahead of Redgrave and Matthew Pinsent, his partner in the coxless pairs, for four years. Redgrave and Pinsent have racked up a string of more than 50 international wins in pairs, as well as four consecutive world championships...